The Nordic countries are comprised of Denmark, the Faroe Islands, Greenland, Finland, Åland, Iceland, Norway and Sweden. The Faroe Islands and Greenland are both part of the Kingdom of Denmark, while Åland is part of the Republic of Finland. Like Denmark, Norway and Sweden are monarchies, while Iceland and Finland are republics. Irrespective of their form of government, all heads of state have relatively limited powers in the Nordic countries. All the countries have democratic constitutions, drawn up in the 19th century, all of which, except for the Norwegian constitution, have been amended several times.